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281 lines
14 KiB
C
Executable File
281 lines
14 KiB
C
Executable File
/*
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+----------------------------------------------------------------------+
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| PHP Version 4 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2002 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.02 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available at through the world-wide-web at |
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| http://www.php.net/license/2_02.txt. |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Author: Wez Furlong (wez@thebrainroom.com) |
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+----------------------------------------------------------------------+
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*/
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#ifndef PHP_STREAMS_H
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#define PHP_STREAMS_H
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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/* See README.STREAMS in php4 root dir for more info about this stuff */
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/* {{{ Streams memory debugging stuff */
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#if ZEND_DEBUG
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/* these have more of a dependency on the definitions of the zend macros than
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* I would prefer, but doing it this way saves loads of idefs :-/ */
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# define STREAMS_D int __php_stream_call_depth ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC
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# define STREAMS_C 0 ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC
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# define STREAMS_REL_C __php_stream_call_depth + 1 ZEND_FILE_LINE_CC, \
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__php_stream_call_depth ? __zend_orig_filename : __zend_filename, \
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__php_stream_call_depth ? __zend_orig_lineno : __zend_lineno
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# define STREAMS_DC , STREAMS_D
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# define STREAMS_CC , STREAMS_C
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# define STREAMS_REL_CC , STREAMS_REL_C
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#else
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# define STREAMS_D TSRMLS_D
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# define STREAMS_C TSRMLS_C
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# define STREAMS_REL_C TSRMLS_C
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# define STREAMS_DC TSRMLS_DC
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# define STREAMS_CC TSRMLS_CC
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# define STREAMS_REL_CC TSRMLS_CC
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#endif
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/* these functions relay the file/line number information. They are depth aware, so they will pass
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* the ultimate ancestor, which is useful, because there can be several layers of calls */
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#define php_stream_alloc_rel(ops, thisptr, persistent, mode) _php_stream_alloc((ops), (thisptr), (persistent), (mode) STREAMS_REL_CC TSRMLS_CC)
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#define php_stream_copy_to_mem_rel(src, buf, maxlen, persistent) _php_stream_copy_to_mem((src), (buf), (maxlen), (persistent) STREAMS_REL_CC TSRMLS_CC)
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#define php_stream_fopen_rel(filename, mode, opened) _php_stream_fopen((filename), (mode), (opened) STREAMS_REL_CC TSRMLS_CC)
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#define php_stream_fopen_with_path_rel(filename, mode, path, opened) _php_stream_fopen_with_path((filename), (mode), (path), (opened) STREAMS_REL_CC TSRMLS_CC)
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#define php_stream_fopen_from_file_rel(file, mode) _php_stream_fopen_from_file((file), (mode) STREAMS_REL_CC TSRMLS_CC)
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#define php_stream_fopen_from_pipe_rel(file, mode) _php_stream_fopen_from_pipe((file), (mode) STREAMS_REL_CC TSRMLS_CC)
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#define php_stream_fopen_tmpfile_rel() _php_stream_fopen_tmpfile(STREAMS_REL_C TSRMLS_CC)
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#define php_stream_fopen_temporary_file_rel(dir, pfx, opened_path) _php_stream_fopen_temporary_file((dir), (pfx), (opened_path) STREAMS_REL_CC TSRMLS_CC)
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#define php_stream_open_wrapper_rel(path, mode, options, opened) _php_stream_open_wrapper((path), (mode), (options), (opened) STREAMS_REL_CC TSRMLS_CC)
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#define php_stream_make_seekable_rel(origstream, newstream) _php_stream_make_seekable(origstream, newstream STREAMS_REL_CC TSRMLS_CC)
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/* }}} */
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/* The contents of the php_stream_ops and php_stream should only be accessed
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* using the functions/macros in this header.
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* If you need to get at something that doesn't have an API,
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* drop me a line <wez@thebrainroom.com> and we can sort out a way to do
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* it properly.
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*
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* The only exceptions to this rule are that stream implementations can use
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* the php_stream->abstract pointer to hold their context, and streams
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* opened via stream_open_wrappers can use the zval ptr in
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* php_stream->wrapperdata to hold meta data for php scripts to
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* retrieve using fgetwrapperdata(). */
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typedef struct _php_stream php_stream;
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typedef struct _php_stream_ops {
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/* stdio like functions - these are mandatory! */
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size_t (*write)(php_stream *stream, const char *buf, size_t count TSRMLS_DC);
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size_t (*read)(php_stream *stream, char *buf, size_t count TSRMLS_DC);
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int (*close)(php_stream *stream, int close_handle TSRMLS_DC);
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int (*flush)(php_stream *stream TSRMLS_DC);
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/* these are optional */
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int (*seek)(php_stream *stream, off_t offset, int whence TSRMLS_DC);
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char *(*gets)(php_stream *stream, char *buf, size_t size TSRMLS_DC);
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int (*cast)(php_stream *stream, int castas, void **ret TSRMLS_DC);
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const char *label; /* label for this ops structure */
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} php_stream_ops;
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/* options uses the IGNORE_URL family of defines from fopen_wrappers.h */
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typedef php_stream *(*php_stream_factory_func_t)(char *filename, char *mode, int options, char **opened_path STREAMS_DC TSRMLS_DC);
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typedef void (*php_stream_wrapper_dtor_func_t)(php_stream *stream TSRMLS_DC);
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typedef struct _php_stream_wrapper {
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php_stream_factory_func_t create;
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php_stream_wrapper_dtor_func_t destroy;
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} php_stream_wrapper;
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struct _php_stream {
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php_stream_ops *ops;
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void *abstract; /* convenience pointer for abstraction */
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php_stream_wrapper *wrapper; /* which wrapper was used to open the stream */
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void *wrapperthis; /* convenience pointer for a instance of a wrapper */
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zval *wrapperdata; /* fgetwrapperdata retrieves this */
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int is_persistent;
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char mode[16]; /* "rwb" etc. ala stdio */
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/* so we know how to clean it up correctly. This should be set to
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* PHP_STREAM_FCLOSE_XXX as appropriate */
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int fclose_stdiocast;
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FILE *stdiocast; /* cache this, otherwise we might leak! */
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}; /* php_stream */
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/* state definitions when closing down; these are private to streams.c */
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#define PHP_STREAM_FCLOSE_NONE 0
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#define PHP_STREAM_FCLOSE_FDOPEN 1
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#define PHP_STREAM_FCLOSE_FOPENCOOKIE 2
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/* allocate a new stream for a particular ops */
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PHPAPI php_stream *_php_stream_alloc(php_stream_ops *ops, void *abstract,
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int persistent, const char *mode STREAMS_DC TSRMLS_DC);
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#define php_stream_alloc(ops, thisptr, persistent, mode) _php_stream_alloc((ops), (thisptr), (persistent), (mode) STREAMS_CC TSRMLS_CC)
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#define PHP_STREAM_FREE_CALL_DTOR 1 /* call ops->close */
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#define PHP_STREAM_FREE_RELEASE_STREAM 2 /* pefree(stream) */
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#define PHP_STREAM_FREE_PRESERVE_HANDLE 4 /* tell ops->close to not close it's underlying handle */
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#define PHP_STREAM_FREE_CLOSE (PHP_STREAM_FREE_CALL_DTOR | PHP_STREAM_FREE_RELEASE_STREAM)
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PHPAPI int _php_stream_free(php_stream *stream, int close_options TSRMLS_DC);
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#define php_stream_free(stream, close_options) _php_stream_free((stream), (close_options) TSRMLS_CC)
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#define php_stream_close(stream) _php_stream_free((stream), PHP_STREAM_FREE_CLOSE TSRMLS_CC)
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PHPAPI int _php_stream_seek(php_stream *stream, off_t offset, int whence TSRMLS_DC);
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#define php_stream_rewind(stream) _php_stream_seek((stream), 0L, SEEK_SET TSRMLS_CC)
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#define php_stream_seek(stream, offset, whence) _php_stream_seek((stream), (offset), (whence) TSRMLS_CC)
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PHPAPI off_t _php_stream_tell(php_stream *stream TSRMLS_DC);
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#define php_stream_tell(stream) _php_stream_tell((stream) TSRMLS_CC)
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PHPAPI size_t _php_stream_read(php_stream *stream, char *buf, size_t count TSRMLS_DC);
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#define php_stream_read(stream, buf, count) _php_stream_read((stream), (buf), (count) TSRMLS_CC)
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PHPAPI size_t _php_stream_write(php_stream *stream, const char *buf, size_t count TSRMLS_DC);
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#define php_stream_write_string(stream, str) _php_stream_write(stream, str, strlen(str) TSRMLS_CC)
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#define php_stream_write(stream, buf, count) _php_stream_write(stream, (buf), (count) TSRMLS_CC)
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PHPAPI int _php_stream_eof(php_stream *stream TSRMLS_DC);
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#define php_stream_eof(stream) _php_stream_eof((stream) TSRMLS_CC)
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PHPAPI int _php_stream_getc(php_stream *stream TSRMLS_DC);
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#define php_stream_getc(stream) _php_stream_getc((stream) TSRMLS_CC)
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PHPAPI int _php_stream_putc(php_stream *stream, int c TSRMLS_DC);
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#define php_stream_putc(stream, c) _php_stream_putc((stream), (c) TSRMLS_CC)
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PHPAPI int _php_stream_flush(php_stream *stream TSRMLS_DC);
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#define php_stream_flush(stream) _php_stream_flush((stream) TSRMLS_CC)
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PHPAPI char *_php_stream_gets(php_stream *stream, char *buf, size_t maxlen TSRMLS_DC);
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#define php_stream_gets(stream, buf, maxlen) _php_stream_gets((stream), (buf), (maxlen) TSRMLS_CC)
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PHPAPI int _php_stream_puts(php_stream *stream, char *buf TSRMLS_DC);
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#define php_stream_puts(stream, buf) _php_stream_puts((stream), (buf) TSRMLS_CC)
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/* copy up to maxlen bytes from src to dest. If maxlen is PHP_STREAM_COPY_ALL, copy until eof(src).
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* Uses mmap if the src is a plain file and at offset 0 */
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#define PHP_STREAM_COPY_ALL -1
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PHPAPI size_t _php_stream_copy_to_stream(php_stream *src, php_stream *dest, size_t maxlen STREAMS_DC TSRMLS_DC);
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#define php_stream_copy_to_stream(src, dest, maxlen) _php_stream_copy_to_stream((src), (dest), (maxlen) STREAMS_CC TSRMLS_CC)
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/* read all data from stream and put into a buffer. Caller must free buffer when done.
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* The copy will use mmap if available. */
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PHPAPI size_t _php_stream_copy_to_mem(php_stream *src, char **buf, size_t maxlen,
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int persistent STREAMS_DC TSRMLS_DC);
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#define php_stream_copy_to_mem(src, buf, maxlen, persistent) _php_stream_copy_to_mem((src), (buf), (maxlen), (persistent) STREAMS_CC TSRMLS_CC)
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/* maybe implement someday */
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#define php_stream_error(stream) (0)
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/* operations for a stdio FILE; use the php_stream_fopen_XXX funcs below */
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extern php_stream_ops php_stream_stdio_ops;
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/* like fopen, but returns a stream */
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PHPAPI php_stream *_php_stream_fopen(const char *filename, const char *mode, char **opened_path STREAMS_DC TSRMLS_DC);
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#define php_stream_fopen(filename, mode, opened) _php_stream_fopen((filename), (mode), (opened) STREAMS_CC TSRMLS_CC)
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PHPAPI php_stream *_php_stream_fopen_with_path(char *filename, char *mode, char *path, char **opened_path STREAMS_DC TSRMLS_DC);
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#define php_stream_fopen_with_path(filename, mode, path, opened) _php_stream_fopen_with_path((filename), (mode), (path), (opened) STREAMS_CC TSRMLS_CC)
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PHPAPI php_stream *_php_stream_fopen_from_file(FILE *file, const char *mode STREAMS_DC TSRMLS_DC);
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#define php_stream_fopen_from_file(file, mode) _php_stream_fopen_from_file((file), (mode) STREAMS_CC TSRMLS_CC)
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PHPAPI php_stream *_php_stream_fopen_from_pipe(FILE *file, const char *mode STREAMS_DC TSRMLS_DC);
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#define php_stream_fopen_from_pipe(file, mode) _php_stream_fopen_from_pipe((file), (mode) STREAMS_CC TSRMLS_CC)
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PHPAPI php_stream *_php_stream_fopen_tmpfile(STREAMS_D TSRMLS_DC);
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#define php_stream_fopen_tmpfile() _php_stream_fopen_tmpfile(STREAMS_C TSRMLS_CC)
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PHPAPI php_stream *_php_stream_fopen_temporary_file(const char *dir, const char *pfx, char **opened_path STREAMS_DC TSRMLS_DC);
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#define php_stream_fopen_temporary_file(dir, pfx, opened_path) _php_stream_fopen_temporary_file((dir), (pfx), (opened_path) STREAMS_CC TSRMLS_CC)
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/* coerce the stream into some other form */
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/* cast as a stdio FILE * */
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#define PHP_STREAM_AS_STDIO 0
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/* cast as a POSIX fd or socketd */
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#define PHP_STREAM_AS_FD 1
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/* cast as a socketd */
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#define PHP_STREAM_AS_SOCKETD 2
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/* try really, really hard to make sure the cast happens (socketpair) */
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#define PHP_STREAM_CAST_TRY_HARD 0x80000000
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#define PHP_STREAM_CAST_RELEASE 0x40000000 /* stream becomes invalid on success */
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#define PHP_STREAM_CAST_MASK (PHP_STREAM_CAST_TRY_HARD | PHP_STREAM_CAST_RELEASE)
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PHPAPI int _php_stream_cast(php_stream *stream, int castas, void **ret, int show_err TSRMLS_DC);
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/* use this to check if a stream can be cast into another form */
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#define php_stream_can_cast(stream, as) _php_stream_cast((stream), (as), NULL, 0 TSRMLS_CC)
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#define php_stream_cast(stream, as, ret, show_err) _php_stream_cast((stream), (as), (ret), (show_err) TSRMLS_CC)
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/* use this to check if a stream is of a particular type:
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* PHPAPI int php_stream_is(php_stream *stream, php_stream_ops *ops); */
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#define php_stream_is(stream, anops) ((stream)->ops == anops)
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#define PHP_STREAM_IS_STDIO &php_stream_stdio_ops
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#define php_stream_is_persistent(stream) (stream)->is_persistent
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/* Wrappers support */
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#define IGNORE_PATH 0
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#define USE_PATH 1
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#define IGNORE_URL 2
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/* There's no USE_URL. */
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#define ENFORCE_SAFE_MODE 4
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#define REPORT_ERRORS 8
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/* If you don't need to write to the stream, but really need to
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* be able to seek, use this flag in your options. */
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#define STREAM_MUST_SEEK 16
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#ifdef PHP_WIN32
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# define IGNORE_URL_WIN IGNORE_URL
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#else
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# define IGNORE_URL_WIN 0
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#endif
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int php_init_stream_wrappers(TSRMLS_D);
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int php_shutdown_stream_wrappers(TSRMLS_D);
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PHPAPI int php_register_url_stream_wrapper(char *protocol, php_stream_wrapper *wrapper TSRMLS_DC);
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PHPAPI int php_unregister_url_stream_wrapper(char *protocol TSRMLS_DC);
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PHPAPI php_stream *_php_stream_open_wrapper(char *path, char *mode, int options, char **opened_path STREAMS_DC TSRMLS_DC);
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#define php_stream_open_wrapper(path, mode, options, opened) _php_stream_open_wrapper((path), (mode), (options), (opened) STREAMS_CC TSRMLS_CC)
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#define PHP_STREAM_UNCHANGED 0 /* orig stream was seekable anyway */
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#define PHP_STREAM_RELEASED 1 /* newstream should be used; origstream is no longer valid */
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#define PHP_STREAM_FAILED 2 /* an error occurred while attempting conversion */
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#define PHP_STREAM_CRITICAL 3 /* an error occurred; origstream is in an unknown state; you should close origstream */
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/* DO NOT call this on streams that are referenced by resources! */
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PHPAPI int _php_stream_make_seekable(php_stream *origstream, php_stream **newstream STREAMS_DC TSRMLS_DC);
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#define php_stream_make_seekable(origstream, newstream) _php_stream_make_seekable(origstream, newstream STREAMS_CC TSRMLS_CC)
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#endif
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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* vim600: sw=4 ts=4 fdm=marker
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* vim<600: sw=4 ts=4
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*/
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